New setup overflow question - Herbie

abraha · 07/20/2018, 05:30 PM

I am setting up a new 160 gallon tank. It comes with a center overflow box with two pre-drilled holes on the bottom of the tank (inside overflow box). The holes are designed to be a durso drain (1.5”) and a return (1.0”).
Here is my question: Can I set it up as a Herbie and use the 1.5” as the main drain and the 1.0” as the emergency?

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Lsufan · 07/20/2018, 05:55 PM

U can definitely set it up as a herbie but u will want to use the 1” for the syphon & the 1.5” for the emergency.

abraha · 07/20/2018, 06:28 PM

Thank you Lsufan. What is the reason for that?

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Lsufan · 07/20/2018, 06:41 PM

If u use the 1.5” for the syphon then u may get to a point to where it is handling more flow then which the 1” can handle. So if the 1.5” gets clogged & the 1” can’t handle all of the flow u will have a flood.

Redunctancy aside, I would still rather use the 1” for the syphon. Under the right circumstances a 1” syphon can handle close to 2,000 gph which is probably way more then u will have anyway. Plus if u run a trickle through the emergency, the 1.5” will be able to handle more flunctuation in the system & remain quiet. The smaller the overflow box the more it happens but the overflow will flunctuate some. If u have a 1” emergency & u run a trickle through it, any flunctuation u will have to tune on the valve to get it back quit because a 1” pipe can’t handle much flow & remain quiet. That same flunctuation with a 1.5” pipe & u may not have to tune on the valve because the 1.5” may be able to handle it & remain quiet. If a drain has air in it like the emergency will a 1.5” can handle quite a bit more flow then a 1” & be quiet.

abraha · 07/20/2018, 06:46 PM

Thank you. That makes a lot of sense to me. My old tank just had a durso so the Herbie is new to me.

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07/20/2018, 05:30 PM	#1
abraha Registered Member Join Date: Aug 2008 Location: Orange County, CA Posts: 663	New setup overflow question - Herbie I am setting up a new 160 gallon tank. It comes with a center overflow box with two pre-drilled holes on the bottom of the tank (inside overflow box). The holes are designed to be a durso drain (1.5”) and a return (1.0”). Here is my question: Can I set it up as a Herbie and use the 1.5” as the main drain and the 1.0” as the emergency? Sent from my iPhone using Tapatalk __________________ If you can't fix it with duct tape it can't be fixed! Current Tank Info: 160gallon 3/4 glass cylinder - mostly SPS. 4x XR15w G4 pro + 3x 39w T5 + 2x 24w T5. Apex controller. 2x MP60s. Various 8 return, Regal 200sss, carbon reactor, 50watt UV. CA, ALK, MG dosed via Apex DOS.

07/20/2018, 06:28 PM	#3
abraha Registered Member Join Date: Aug 2008 Location: Orange County, CA Posts: 663	Thank you Lsufan. What is the reason for that? Sent from my iPhone using Tapatalk __________________ If you can't fix it with duct tape it can't be fixed! Current Tank Info: 160gallon 3/4 glass cylinder - mostly SPS. 4x XR15w G4 pro + 3x 39w T5 + 2x 24w T5. Apex controller. 2x MP60s. Various 8 return, Regal 200sss, carbon reactor, 50watt UV. CA, ALK, MG dosed via Apex DOS.

07/20/2018, 06:46 PM	#5
abraha Registered Member Join Date: Aug 2008 Location: Orange County, CA Posts: 663	Thank you. That makes a lot of sense to me. My old tank just had a durso so the Herbie is new to me. Sent from my iPhone using Tapatalk __________________ If you can't fix it with duct tape it can't be fixed! Current Tank Info: 160gallon 3/4 glass cylinder - mostly SPS. 4x XR15w G4 pro + 3x 39w T5 + 2x 24w T5. Apex controller. 2x MP60s. Various 8 return, Regal 200sss, carbon reactor, 50watt UV. CA, ALK, MG dosed via Apex DOS.

07/20/2018, 05:55 PM	#2
Lsufan Registered Member Join Date: Nov 2013 Location: Baton Rouge Posts: 1,410	U can definitely set it up as a herbie but u will want to use the 1” for the syphon & the 1.5” for the emergency.

07/20/2018, 06:41 PM	#4
Lsufan Registered Member Join Date: Nov 2013 Location: Baton Rouge Posts: 1,410	If u use the 1.5” for the syphon then u may get to a point to where it is handling more flow then which the 1” can handle. So if the 1.5” gets clogged & the 1” can’t handle all of the flow u will have a flood. Redunctancy aside, I would still rather use the 1” for the syphon. Under the right circumstances a 1” syphon can handle close to 2,000 gph which is probably way more then u will have anyway. Plus if u run a trickle through the emergency, the 1.5” will be able to handle more flunctuation in the system & remain quiet. The smaller the overflow box the more it happens but the overflow will flunctuate some. If u have a 1” emergency & u run a trickle through it, any flunctuation u will have to tune on the valve to get it back quit because a 1” pipe can’t handle much flow & remain quiet. That same flunctuation with a 1.5” pipe & u may not have to tune on the valve because the 1.5” may be able to handle it & remain quiet. If a drain has air in it like the emergency will a 1.5” can handle quite a bit more flow then a 1” & be quiet.